Universal cutting machine



March 26, 1940. F. w. GRAFF UNIVERSAL CUTTING MACHINE 4 Sheets-Sheet 1 Filed April 7, 1938 INVENIOR. FREDERICK w. GRAFF.

BY 9% M ATTORNEY.

March 26, 1940. GRAFF 2,195,108

UNIVERSAL CUTTING MACHINE 4 Shee'ts-Sheet 2 Filed April 7, 1958 INVENTOR FREDERICK 'W. GRAFF- ATTORNEY.

March 26, 1940. F. w. GRAFF UNIVERSAL CUTTING MACHINE Filed April 7, 1938 4 Shuts-Sheet 3 was M Qze, 1940.

umvmsar. currmo Frederick w. Grail, 'saebm'm. Wis. Application April '1, im, Serial No. 200,;

OOlaima. {on 31-34) My invention relates to a new and improved cutting machine wherein the tool holder is mounted on a head movable lengthwise of thev machine and having a cross-head movable transversely with relation to the first head for moving a tool in various longitudinal and transverse planes.

A further feature of my improved machine provides means for tilting-or rotating the tool holdl0 er for cutting bevels or other tangent cuts.

The object of my invention is to provide a machine with a super-structure forming a track for a tool supporting carriage. A further object is to provide the carriage with a rotatable crossslide on which a tool supporting head' traverses C and capable of being power driven in a plane transverse of the movement ofthe carriage. A further object provides novel means for mounting an electric motor arranged to carry the cutting tool and adjustable in various universal positions.

A further object is to provide means on the machine for rigidly supporting the work and providing power means for operating a suitable tool capable of movement in various universal directions on the work.

My invention will be further readily understood from the following description and claims, and

from the drawings, in which latter:

Fig. 1 is a front view of my improved machine.

Fig. 2 is an end view of the same.

Fig. 3 is avertical cross-section of the head, taken in the plane of the irregular line 33 of Fi 1.

Fig. 4 is a vertical section, taken in the plane of the irregular. line 4--4 of Fig. 3; and,

Fig. 5 is a horizontal section of a detail of the same, taken in the plane of the line 3-5 of Fig. 4.

My improved machine comprises vertical supports II and I2, to which a super-structure I3 is suitably secured. A bed I4 is located below the super-structure l3. The bed has suitable T slots therein to permit the clamping of flat slab material thereon.

ways I! arranged to support a head IS. A feed The super-structure I3 is provided with run A gear 24- rotatable on the shaft 23 meshes with a rack 23 secured to the super-structure. l3 and the gear 24 is provided with clutch teeth 23 arranged to be' engaged by clutch teeth 2'! on a movable clutch member 23- keyed to the shaft 23 g and operable by; a lever 23. Engagement of the clutch teeth 23 and 21 causes the gear 24 to travel along the rack 23 for moving the head It along the tracks, I. The head II also supportsa cross-head 3l.'pro'vided with slides 3|, in which 10 a. transverse moving structure 32 is mounted. Within the structure 32 is a worm shaft 33 arranged to mesh with a worm wheel 34 fixed to a stud shaft", which is journaled in bearings 36, and a bearing 31 within the end of the shaft 20. 15

A clutch member 33 is fixed to the stud shaft and a movable clutch member 33 is fixed to the shaft 23. A lever 43 operates the clutch. Engagement of the clutch'ca'uses rotation of the worm wheel 34 for causing the worm wheel to move the shaft 33 and the structure 32 transversely of the movement of the head l6. A squared end 4| on the shaft 33 provides means for using a wrench to manually rotate the screw 33 for properly-locating a cutting tool; relative to the 35 work in setting. up a job.

'A pair of guides 45 are secured to a vertically movable member 46 and are suitably clamped in adjusted position in the structure 32 .by means of lock'nuts 41. A screw 43 is journaled in bear- 30 ings 43 in the member 46 and has threaded connection with the structure 32, as indicated at 50.

A worm wheel ii is secured to the lower. end of the screw 43 and is rotated by means of a worm 52 having squared ends 53 arranged to receive a. suitable wrench for rotating the screw and raising or lowering the tool holder. A pull pin 54 is mounted in the member 46 having its end 55 arranged to engage apertures 56 in a motor supporting yoke 51. There arefour apertures 56 40 arranged at right angles to each other to permit the yoke 51 to be moved to four positions; that is, to present the cutting tool on either the right or left side of the motor in either a longitudinal plane or a transverse plane to the work table. 45

The yoke 51 rotates on a plate 58 suitably bolted to the member 46. A special motor housing 60, houses an electric motor 6| pivoted within the yoke 51 and is arranged to be tilted in a vertical plane within the yoke by means of having extending bearings 62 provided with clamp plates 63. Suitable bolts and nuts 64 lock the motor in adjusted position.

A suitable tool holder 35 extends from the motor and in the present instance is shown as a shaft supporting an abrading wheel I. but it will be apparent that any other cutting tool may be suitably mounted or attached to the shaft 65 or a shaping tool holder may displace the motor mounting to permit planar cuts to be taken on the work.

The cross-head 30 is rotatably mounted on the head It by means of T bolts clamping the cross-head ii to the head II and gibs ll received over the flange 12 on the head I. Thus it is apparent that the cross-head can be moved about the head I to cause the lower structure and tool holder to move in various'planes for producing'angular cuts on the work.

Assuming it is desired to cut a slab of material into a parallelogram formation, the material is clamped to the bed II and the cutter adjusted to the proper height by means of rotating the screw '2 and the pull .pin it is set in the proper notch for causing the abrading wheel 66 to travel in the proper direction on the work which would be in the present exemplification at right angles to the position shown in Fig. 1. The fluid motor is engaged for causing the worm I! to rotate for imparting rotation to the worm wheel 23. The clutch handle 20 is moved downwardly to the position shown in Fig. 1 for causing engagement of the clutch teeth 26 and 21,

causing the pinion gear 24 to rotate with the shaft 20 along the rack 25, whereby the tool holder and its component parts will move lengthwise of the super-structure.

When the cut is completed and through the operation of suitable clutches the reversal of the screw ll takes place and the entire toolholder is returned to its starting position. The crosscarriage 32 can be moved transversely of the head 30 for moving the cutter to the opposite side of the work for performing a similar cut on that side of the work. If it is desired to cut the other edges of the work in an angular direction; that is, at an angle of lesser or greater degree than a right angle to the previous cut, the head 3| is rotated on the head I. for positioning the cutter and the head ill at the proper angle for the cut. During this cutting operation the clutch lever 29 is moved upwardly for disengaging the clutches 2!! and 21 and the clutch lever II is moved downwardly for engaging the clutches 38 and II for causing the worm wheel to move endwise along the worm 32, which in this instance acts as a rack for the worm wheel II.

If it is desired to also cut a bevel on one of the edges of the material, the motor can be moved in a vertical plane about its pivot for presenting the cutter in an angular position relative to the work for causing the cutter to cut an angular edge on the material.

It will be apparent from the foregoing that I have devised a machine in which the work is held stationary and the tool can be presented or moved over the work in all directions it might be desirable to cut the material.

Having thus fully described my invention, what I claim as new. and desire to secure by Letters Patent, is:

1. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable endwise on said super-structure, a second carriage horizontally movable in said first named carriage, a yoke depending from said carriage and rotatable thereon, and a power driven tool pivotally mounted in said yoke.

2. A universal cutting machine comprising a work support. a super-structure above said work support, a carriage movable on said super-structure, a second carriage horizontally movable in said first named carriage, a yoke depending from said second carriage, means for rotating said yoke, means for raising and lowering'said yoke and a power driven tool pivotally mounted in said yoke.

3. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable on said super-structure, a rotatable slide on said carriage, a second carriage horizontally movable in said slide, a yoke depending from said second carriage, means for rotating said yoke, and a power driven tool pivotally mounted in said yoke.

4. A universal cutting machine comprising a work support, a super-structure above said work support, acarriage movable in said super-structure, a rotatable slide on said carriage, a second carriage horizontally movable in said slide. a yoke depending from said second carriage, means for raising and lowering said yoke, means for rotating said yoke, and a power driven tool pivotally mounted in said yoke.-

5. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable in said super-structure, a rotatable slide on said carriage, a second carriage horizontally movable in said slide, a yoke depending from said second carriage, means for raising and lowering said yoke, means for rotating said yoke, a power driven tool pivotally mounted in said yoke and power means for imparting movement to said respective carriages.

6. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable on said super-structure, a second carriage horizontally movable in said first named carriage, a yoke depending from said second carriage and horizontally rotatable thereon, and a tool mounted in said yoke.

7. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable on said super-structure, a second carriage horizontally movable in said first named carriage, a support extending from said second carriage. a yoke depending from said last named support and horizontally rotatable thereon, means for raising and lowering said yoke and a tool mounted in said yoke.

8. A universal cutting machine comprising a work support,a super-structure above said work support, a carriage movable on said super-structure, a horizontally rotatable slide on said carriage, a second carriage movable in said slide, a support extending from said second carriage, a yoke depending from said last named support and horizontally rotatable thereon, and a tool mounted in saidyoke.

9. A universal cutting machine comprising a work support, a super-structure above said work support, a carriage movable on said super-structure, a horizontally rotatable slide on said carriage; a second carriage movable in said slide, a

- yoke depending from said second carriage, means mnnsarck w. GRAFF. 

